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            <div class="section-title">
              <h1>Version 1.58.0</h1>
            </div>

            <div class="section-body">
              <h2><span class=
              "news-title">Version 1.58.0</span></h2>

              <p><span class=news-date">April 17th, 2015 07:53 GMT</span></p>
              <p><a href="/doc/libs/1_58_0/">Documentation</a>
              <table class="download-table"><caption>Downloads</caption><tr><th scope="col">Platform</th><th scope="col">File</th></tr>
<tr><th scope="row" rowspan="2">unix</th><td><a href="http://sourceforge.net/projects/boost/files/boost/1.58.0/boost_1_58_0.tar.bz2">boost_1_58_0.tar.bz2</a></td></tr><tr><td><a href="http://sourceforge.net/projects/boost/files/boost/1.58.0/boost_1_58_0.tar.gz">boost_1_58_0.tar.gz</a></td></tr>
<tr><th scope="row" rowspan="2">windows</th><td><a href="http://sourceforge.net/projects/boost/files/boost/1.58.0/boost_1_58_0.7z">boost_1_58_0.7z</a></td></tr><tr><td><a href="http://sourceforge.net/projects/boost/files/boost/1.58.0/boost_1_58_0.zip">boost_1_58_0.zip</a></td></tr></table>
              <div class="news-description">
                <div class="description">



  <div id="version_1_58_0.known_issue">
    <h3><span class="link">Known Issue</span></h3>
    <ul>
      <li>
        <div>
          Boost.Python will fail to build if it is compiled against a version of
          python that is one of: 3.0.X, 3.1.X, 3.2.X, 3.3.X. Versions 2.X and 3.4+
          are not affected. This is fixed in <a href="https://github.com/boostorg/python/commit/3e405b6fd5db5615bbef241763de070118222ca7">git</a>.
        </div>
      </li>
      <li>
        <div>
          Boost.Fusion has a regression with non-constexpr types. <a href="https://svn.boost.org/trac/boost/ticket/11211">#11211</a>
  This
          is fixed in some PRs: <a href="https://github.com/boostorg/fusion/pull/70">Github
          PR #70</a>, <a href="https://github.com/boostorg/fusion/pull/71">Github
          PR #71</a>, <a href="https://github.com/boostorg/fusion/pull/72">Github
          PR #72</a>
        </div>
      </li>
    </ul>
    <p>
      Patches:
    </p>
    <ul>
      <li>
        <div>
          <a href="/patches/1_58_0/0001-Fix-exec_file-for-Python-3-3.4.patch">0001-Fix-exec_file-for-Python-3-3.4.patch</a>
          (for libs/python).
        </div>
      </li>
      <li>
        <div>
          <a href="/patches/1_58_0/0002-Fix-a-regression-with-non-constexpr-types.patch">0002-Fix-a-regression-with-non-constexpr-types.patch</a>
          (for libs/fusion).
        </div>
      </li>
    </ul>
  </div>
  <div id="version_1_58_0.new_libraries">
    <h3><span class="link">New Libraries</span></h3>
    <ul>
      <li>
        <div>
          <span class="library"><a href="/libs/endian">Endian</a>:</span>
  Types and conversion functions
          for correct byte ordering and more regardless of processor endianness.
        </div>
      </li>
      <li>
        <div>
          <span class="library"><a href="/libs/sort/">Sort</a>:</span>
  Includes spreadsort, a general-case
          hybrid radix sort that is faster than O(n*log(n))
        </div>
      </li>
    </ul>
  </div>
  <div id="version_1_58_0.updated_libraries">
    <h3><span class="link">Updated Libraries</span></h3>
    <ul>
      <li>
        <div>
          <span class="library"><a href="/libs/asio/">Asio</a>:</span>
          <ul>
            <li>
              <div>
                Ensured errors generated by Windows' <code><span class="identifier">ConnectEx</span></code>
                function are mapped to their portable equivalents (<a href="https://svn.boost.org/trac/boost/ticket/10744">#10744</a>).
              </div>
            </li>
            <li>
              <div>
                Added new macro <code><span class="identifier">BOOST_ASIO_DISABLE_CONNECTEX</span></code>
                to allow use of <code><span class="identifier">ConnectEx</span></code>
                to be explicitly disabled.
              </div>
            </li>
            <li>
              <div>
                Fixed a race condition in <code><span class="identifier">windows</span><span class="special">::</span><span class="identifier">object_handle</span></code>
                when there are pending wait operations on destruction (<a href="https://svn.boost.org/trac/boost/ticket/10624">#10624</a>).
              </div>
            </li>
            <li>
              <div>
                Fixed IPv6 address parsing on FreeBSD, where a trailing scope ID
                would cause conversion to fail with <code><span class="identifier">EINVAL</span></code>.
              </div>
            </li>
            <li>
              <div>
                Worked around shared library visibility issues by ensuring Asio types
                use default visibility (<a href="https://svn.boost.org/trac/boost/ticket/9465">#9465</a>, <a href="https://svn.boost.org/trac/boost/ticket/11070">#11070</a>).
              </div>
            </li>
            <li>
              <div>
                Changed the SSL wrapper to call the password callback when loading
                an in-memory key (<a href="https://svn.boost.org/trac/boost/ticket/10828">#10828</a>).
              </div>
            </li>
            <li>
              <div>
                Fixed false SSL error reports by ensuring that the SSL error queue
                is cleared prior to each operation.
              </div>
            </li>
            <li>
              <div>
                Fixed an <code><span class="identifier">ssl</span><span class="special">::</span><span class="identifier">stream</span><span class="special">&lt;&gt;</span></code>
                bug that may result in spurious 'short read' errors.
              </div>
            </li>
            <li>
              <div>
                Removed a redundant null pointer check in the SSL engine (<a href="https://svn.boost.org/trac/boost/ticket/10088">#10088</a>).
              </div>
            </li>
            <li>
              <div>
                Added options for disabling TLS v1.1 and v1.2 (<a href="https://svn.boost.org/trac/boost/ticket/10690">#10690</a>).
              </div>
            </li>
            <li>
              <div>
                Removed use of deprecated OpenSSL function <code><span class="identifier">ERR_remove_state</span></code>.
              </div>
            </li>
            <li>
              <div>
                Fixed detection of various C++11 features with Clang (<a href="https://svn.boost.org/trac/boost/ticket/8835">#8835</a>,
                <a href="https://svn.boost.org/trac/boost/ticket/10884">#10884</a>).
              </div>
            </li>
            <li>
              <div>
                Fixed detection of C++11 <code><span class="identifier">std</span><span class="special">::</span><span class="identifier">addressof</span></code>
                with <tt>g++</tt> (<a href="https://svn.boost.org/trac/boost/ticket/10982">#10982</a>).
              </div>
            </li>
            <li>
              <div>
                Changed multicast test to treat certain <code><span class="identifier">join_group</span></code>
                failures as non-fatal.
              </div>
            </li>
            <li>
              <div>
                Decoupled Asio unit tests from Boost.Test (<a href="https://svn.boost.org/trac/boost/ticket/11116">#11116</a>).
              </div>
            </li>
            <li>
              <div>
                Changed the tutorial to use <code><span class="identifier">std</span><span class="special">::</span><span class="identifier">endl</span></code>
                to ensure output is flushed.
              </div>
            </li>
            <li>
              <div>
                Fixed an unsigned integer overflow reported by Clang's integer sanitizer.
              </div>
            </li>
            <li>
              <div>
                Added support for move-only return types when using a <code><span class="identifier">yield_context</span></code> object with asynchronous
                operations.
              </div>
            </li>
            <li>
              <div>
                Changed <code><span class="identifier">yield_context</span></code>
                to allow reentrant calls to the completion handler from an initiating
                function.
              </div>
            </li>
            <li>
              <div>
                Updated detection of Windows Runtime to work with latest Windows
                SDK.
              </div>
            </li>
          </ul>
        </div>
      </li>
      <li>
        <div>
          <span class="library"><a href="/libs/chrono/">Chrono</a>:</span>
          <ul>
            <li>
              <div>
                <em>Version</em> 2.0.5
              </div>
            </li>
            <li>
              <div>
                <em>Fixes:</em>
                <ul>
                  <li>
                    <div>
                      <a href="http://svn.boost.org/trac/boost/ticket/10778">#10778</a>
                      VC14 CTP4 Atomic don't compile with boost::chrono durations
                      which are not TriviallyCopyable
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="http://svn.boost.org/trac/boost/ticket/10840">#10840</a>
                      Missing std:: qualifier for puts call in test_7868.cpp
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="http://svn.boost.org/trac/boost/ticket/10851">#10851</a>
                      Missing std:: qualifier for puts call in time_point_output.cpp
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="http://svn.boost.org/trac/boost/ticket/10893">#10893</a>
                      Minor doc typo in Boost.Chrono
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="http://svn.boost.org/trac/boost/ticket/10992">#10992</a>
                      Chrono IO state savers inconsistent with Boost.IO state savers
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="http://svn.boost.org/trac/boost/ticket/10995">#10995</a>
                      duration_put::put_value truncates fractional part
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="http://svn.boost.org/trac/boost/ticket/11006">#11006</a>
                      Impossible to instantiate time_fmt_io_saver due to several
                      errors.
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="http://svn.boost.org/trac/boost/ticket/11012">#11012</a>
                      chrono_io v2 fail to compile with boost::chrono::duration&lt;
                      boost::rational&lt;int&gt; &gt;
                    </div>
                  </li>
                </ul>
              </div>
            </li>
          </ul>
        </div>
      </li>
      <li>
        <div>
          <span class="library"><a href="/libs/container/">Container</a>:</span>
          <ul>
            <li>
              <div>
                Experimental <code><span class="identifier">small_vector</span></code>
                container.
              </div>
            </li>
            <li>
              <div>
                Massive dependency reorganization. Now <em>Boost.Container</em>
                depends on very basic utilities like Boost.Core and <em>Boost.Intrusive</em>.
                Preprocessed code size have decreased considerably and compilation
                times have improved.
              </div>
            </li>
            <li>
              <div>
                Added <code><span class="identifier">nth</span></code> and <code><span class="identifier">index_of</span></code> functions to containers
                with random-access iterators (except <code><span class="identifier">basic_string</span></code>).
              </div>
            </li>
            <li>
              <div>
                Added C++17's <code><span class="identifier">allocator_traits</span><span class="special">&lt;</span><span class="identifier">Allocator</span><span class="special">&gt;::</span><span class="identifier">is_always_equal</span></code>.
              </div>
            </li>
            <li>
              <div>
                Updated containers to implement new constructors as specified in
                <a href="http://www.open-std.org/jtc1/sc22/wg21/docs/lwg-defects.html#2210">2210.
                Missing allocator-extended constructor for allocator-aware containers</a>.
              </div>
            </li>
            <li>
              <div>
                Fixed bugs:
                <ul>
                  <li>
                    <div>
                      <a href="https://svn.boost.org/trac/boost/ticket/9931">#9931:
                      <em>"flat_map::insert(ordered_unique_range_t...)
                      fails with move_iterators"</em></a> (reopened).
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="https://svn.boost.org/trac/boost/ticket/11076">#11076:
                      <em>"Unqualified calls to memmove/memcpy in container/detail/copy_move_algo.hpp"</em></a>.
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="https://svn.boost.org/trac/boost/ticket/10790">Trac
                      #10790 (<em>long long errors from container"</em>)</a>.
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="https://svn.boost.org/trac/boost/ticket/10808">Trac
                      #10808 (<em>compare equal operator of vector is broken"</em>)</a>.
                    </div>
                  </li>
                </ul>
              </div>
            </li>
            <li>
              <div>
                <em>Source Breaking</em>: <code><span class="identifier">scoped_allocator_adaptor</span></code>'s
                <code><span class="identifier">propagate_on_container_copy_assignment</span></code>,
                <code><span class="identifier">propagate_on_container_move_assignment</span></code>
                and <code><span class="identifier">propagate_on_container_swap</span></code>
                are no longer <code><span class="special">::</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">integral_constant</span><span class="special">&lt;</span><span class="keyword">bool</span><span class="special">,</span> <span class="keyword">true</span><span class="special">/</span><span class="keyword">false</span><span class="special">&gt;</span></code> types. The dependency reorganization
                needed to break with those classes to avoid MPL dependencies, and
                interoperability with <code><span class="identifier">std</span><span class="special">::</span><span class="identifier">integral_constant</span></code>
                was not guaranteed. Code assumming <code><span class="identifier">boost</span><span class="special">::</span><span class="identifier">true_type</span><span class="special">/</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">false_type</span></code>
                on this will not compile. As a workaround, use the guaranteed internal
                <code><span class="special">::</span><span class="identifier">value</span></code>
                constant: <code><span class="special">::</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">integral_constant</span><span class="special">&lt;</span><span class="keyword">bool</span><span class="special">,</span> <span class="identifier">scoped_allocator_adaptor</span><span class="special">&lt;</span><span class="identifier">Allocator</span><span class="special">&gt;::</span><span class="identifier">propagate_on_container_move_assignment</span><span class="special">::</span><span class="identifier">value</span><span class="special">&gt;</span></code>.
              </div>
            </li>
          </ul>
        </div>
      </li>
      <li>
        <div>
          <span class="library"><a href="/libs/context/">Context</a>:</span>
          <ul>
            <li>
              <div>
                support for ARM/iOS (32+64 bit)
              </div>
            </li>
            <li>
              <div>
                class execution_context (C++14)
              </div>
            </li>
          </ul>
        </div>
      </li>
      <li>
        <div>
          <span class="library"><a href="/libs/conversion/">Conversion</a>:</span>
          <ul>
            <li>
              <div>
                <code><span class="identifier">polymorphic_pointer_downcast</span></code>
                and <code><span class="identifier">polymorphic_pointer_cast</span></code>
                functions were added (thanks to Boris Rasin) <a href="https://svn.boost.org/trac/boost/ticket/10780">#10780</a>
              </div>
            </li>
            <li>
              <div>
                All the functions now throw exceptions using <code><span class="identifier">boost</span><span class="special">::</span><span class="identifier">throw_exception</span></code>
              </div>
            </li>
            <li>
              <div>
                Documnetation update
              </div>
            </li>
          </ul>
        </div>
      </li>
      <li>
        <div>
          <span class="library"><a href="/libs/date_time/">DateTime</a>:</span>
          <ul>
            <li>
              <div>
                Restored <code><span class="identifier">to_time_t</span></code>
                function.
              </div>
            </li>
            <li>
              <div>
                Renamed variable v_type to var_type so it longer conflicts with an
                AIX system variable.
              </div>
            </li>
            <li>
              <div>
                Documnetation fixes.
              </div>
            </li>
          </ul>
        </div>
      </li>
      <li>
        <div>
          <span class="library"><a href="/libs/flyweight/">Flyweight</a>:</span>
          <ul>
            <li>
              <div>
                Added hash support both with <code><span class="identifier">std</span><span class="special">::</span><span class="identifier">hash</span></code>
                and <a href="/doc/html/hash.html"><code><span class="identifier">boost</span><span class="special">::</span><span class="identifier">hash</span></code></a>.
                This can be optionally <a href="/libs/flyweight/doc/reference/flyweight.html#disable_hash_support">disabled</a>
                to avoid clashes with legacy code where this support has already
                been defined by the user.
              </div>
            </li>
            <li>
              <div>
                Maintenance fixes.
              </div>
            </li>
          </ul>
        </div>
      </li>
      <li>
        <div>
          <span class="library"><a href="/libs/function/">Function</a>:</span>
          <ul>
            <li>
              <div>
                Added support for functions accepting C++11 rvalues and Boost.Move
                rvalues <a href="https://svn.boost.org/trac/boost/ticket/10585">#10585</a>.
              </div>
            </li>
          </ul>
        </div>
      </li>
      <li>
        <div>
          <span class="library"><a href="/libs/functional/factory/">Functional/Factory</a>:</span>
          <ul>
            <li>
              <div>
                Minor breaking change: the default template parameter to indicate
                that it shouldn't use an allocator is now <code><span class="keyword">void</span></code>,
                instead of <code><span class="identifier">boost</span><span class="special">::</span><span class="identifier">none_t</span></code>.
                For details, see the <a href="/libs/functional/factory/doc/html/#boost_functional_factory.changes">changelog</a>.
              </div>
            </li>
          </ul>
        </div>
      </li>
      <li>
        <div>
          <span class="library"><a href="/libs/fusion/">Fusion</a>:</span>
          <ul>
            <li>
              <div>
                Automatic hash creation function (<a href="https://github.com/boostorg/fusion/pull/12">Github
                PR #12</a>)
              </div>
            </li>
            <li>
              <div>
                New ADAPT_STRUCT, ADAPT_ADT, ADAPT_ASSOC_ that deduce the members
                types (<a href="https://svn.boost.org/trac/boost/ticket/9516">#9516</a>).
              </div>
            </li>
            <li>
              <div>
                Add convert implementation for Boost.Tuple and std::tuple.
              </div>
            </li>
            <li>
              <div>
                Add mpl::clear implementation for Boost.Tuple and std::tuple.
              </div>
            </li>
            <li>
              <div>
                Use boost::declval instead of std::declval, (<a href="https://svn.boost.org/trac/boost/ticket/10190">#10190</a>).
              </div>
            </li>
            <li>
              <div>
                Remove use of <code><span class="identifier">boost</span><span class="special">::</span><span class="identifier">blank</span></code>
                (<a href="https://svn.boost.org/trac/boost/ticket/8622">#8622</a>).
              </div>
            </li>
            <li>
              <div>
                Add result_of::{copy,move} (<a href="https://svn.boost.org/trac/boost/ticket/5886">#5886</a>).
              </div>
            </li>
            <li>
              <div>
                Better constexpr and noexcept support.
              </div>
            </li>
            <li>
              <div>
                Improved SFINAE Friendliness of many metafunctions (<a href="https://svn.boost.org/trac/boost/ticket/10676">#10676</a>,
                <a href="https://svn.boost.org/trac/boost/ticket/10443">#10443</a>).
              </div>
            </li>
            <li>
              <div>
                result_of::size::value and result_of::size::type::value are the same
                type now (<a href="https://svn.boost.org/trac/boost/ticket/7304">#7304</a>)
              </div>
            </li>
            <li>
              <div>
                result_of::at&lt;Seq, N&gt;::type is now defined when sizeof of sequence
                is less than N (<a href="https://svn.boost.org/trac/boost/ticket/6507">#6507</a>, <a href="https://svn.boost.org/trac/boost/ticket/7651">#7651</a>)
              </div>
            </li>
            <li>
              <div>
                Fix missing includes (<a href="https://svn.boost.org/trac/boost/ticket/8457">#8457</a>).
              </div>
            </li>
            <li>
              <div>
                Many documentation fixes &amp; improvements (<a href="https://svn.boost.org/trac/boost/ticket/6090">#6090</a>, <a href="https://svn.boost.org/trac/boost/ticket/5324">#5324</a>,
                <a href="https://github.com/boostorg/fusion/pull/33">GitHub PR
                #33</a>, <a href="https://github.com/boostorg/fusion/pull/53">GitHub
                PR #53</a>, <a href="https://github.com/boostorg/fusion/pull/56">GitHub
                PR #56</a>)
              </div>
            </li>
          </ul>
        </div>
      </li>
      <li>
        <div>
          <span class="library"><a href="/libs/geometry/">Geometry</a>:</span>
          <ul>
            <li>
              <div>
                <em>Additional functionality:</em>
                <ul>
                  <li>
                    <div>
                      New algorithm num_segments, returning the number of segments
                      of a geometry
                    </div>
                  </li>
                  <li>
                    <div>
                      New overload for is_valid algorithm, that takes a string reference
                      as a second argument and fills it with a message related to
                      the validity or invalidity of the geometry
                    </div>
                  </li>
                  <li>
                    <div>
                      New overload for is_valid algorithm, that takes an enum reference
                      as a second argument and fills it with a value related to the
                      validity or invalidity of the geometry
                    </div>
                  </li>
                  <li>
                    <div>
                      Disjoint and intersects support the following geometry combinations:
                      point/multipoint, multipoint/multipoint, multipoint/segment,
                      multipoint/box
                    </div>
                  </li>
                </ul>
              </div>
            </li>
            <li>
              <div>
                <em>Improvements:</em>
                <ul>
                  <li>
                    <div>
                      Buffer now supports flat-ends for linestrings with a bend close
                      to the start (such that buffered segment crosses flat-end).
                    </div>
                  </li>
                  <li>
                    <div>
                      Buffer performance is improved significantly
                    </div>
                  </li>
                  <li>
                    <div>
                      Partition performance is improved significantly for polygons,
                      potentially enhancing all overlay operations
                    </div>
                  </li>
                </ul>
              </div>
            </li>
            <li>
              <div>
                <em>Solved tickets:</em>
                <ul>
                  <li>
                    <div>
                      <a href="https://svn.boost.org/trac/boost/ticket/8379">#8379</a>
                      Invalid comparison of the result of determinant
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="https://svn.boost.org/trac/boost/ticket/10108">#10108</a>
                      Error in overlay operations in specific cases where geometries
                      touch at one point
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="https://svn.boost.org/trac/boost/ticket/10201">#10201</a>
                      Suggestion to use different function to compare coordinates
                      [wontfix]
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="https://svn.boost.org/trac/boost/ticket/10467">#10467</a>
                      Template parameter name coliding with B0 macro name defined
                      in termios.h
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="https://svn.boost.org/trac/boost/ticket/10640">#10640</a>
                      Invalid result of buffer() for CCW Polygons.
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="https://svn.boost.org/trac/boost/ticket/10666">#10666</a>
                      MSVC compiler warning C4127: conditional expression is constant
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="https://svn.boost.org/trac/boost/ticket/10747">#10747</a>
                      Error in rescaling causing errors in areal/areal set operations
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="https://svn.boost.org/trac/boost/ticket/10770">#10770</a>
                      Buffer fails for large distances, or rough round joins, where
                      concavities where not intersected properly
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="https://svn.boost.org/trac/boost/ticket/10658">#10658</a>
                      sym_difference yields bad result for int polygons
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="https://svn.boost.org/trac/boost/ticket/10835">#10835</a>
                      Difference of multilinestring and polygon yields wrong result
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="https://svn.boost.org/trac/boost/ticket/10861">#10861</a>
                      Rtree failing to compile for Value being a pair or a tuple
                      containing pointer to Geometry and the default equal_to&lt;&gt;
                      used
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="https://svn.boost.org/trac/boost/ticket/10863">#10863</a>
                      Template parameter name coliding with B0 macro name defined
                      in termios.h (duplicate of 10467)
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="https://svn.boost.org/trac/boost/ticket/10887">#10887</a>
                      Invalid result of within() and relate() for Linear/MultiPolygon
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="https://svn.boost.org/trac/boost/ticket/10890">#10890</a>
                      Invalid result of disjoint() for Point/Segment.
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="https://svn.boost.org/trac/boost/ticket/10904">#10904</a>
                      Invalid calculation of most significant Dimension of a segment
                      in relate_cartesian_segments strategy
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="https://svn.boost.org/trac/boost/ticket/10912">#10912</a>
                      Invalid result of within() and relate() for Areal/Areal
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="https://svn.boost.org/trac/boost/ticket/10951">#10951</a>
                      Tests failing on windows with intel compiler due to lack of
                      /bigobj flag.
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="https://svn.boost.org/trac/boost/ticket/10957">#10957</a>
                      Assertion failure and invalid results of various relational
                      operations.
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="https://svn.boost.org/trac/boost/ticket/10958">#10958</a>
                      Invalid results of disjoint() L/L and L/A.
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="https://svn.boost.org/trac/boost/ticket/10959">#10959</a>
                      Assertion failure in get_turns() used with no_rescale_policy.
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="https://svn.boost.org/trac/boost/ticket/10960">#10960</a>
                      Invalid result of get_turns() for L/A, missing turn.
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="https://svn.boost.org/trac/boost/ticket/10961">#10961</a>
                      Invalid result of get_turns() for L/A, invalid turn for a Linear
                      spike.
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="https://svn.boost.org/trac/boost/ticket/11112">#11112</a>
                      Compilation failure on Solaris due to a CS name clash (used
                      for a macro on this platform)
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="https://svn.boost.org/trac/boost/ticket/11121">#11121</a>
                      Invalid result of difference() for integral coordinates
                    </div>
                  </li>
                </ul>
              </div>
            </li>
            <li>
              <div>
                <em>Bugfixes:</em>
                <ul>
                  <li>
                    <div>
                      Bug in multipoint/polygon multipoint/multipolygon distance
                      computation (wrong detection of points inside the areal geometry)
                    </div>
                  </li>
                  <li>
                    <div>
                      Bug in flatten_iterator's assignment operator causing an access
                      violation
                    </div>
                  </li>
                  <li>
                    <div>
                      Bug in Cartesian segment-segment intersection strategy when
                      one segment degenerates to a point and is collinear to the
                      other non-degenerate segment
                    </div>
                  </li>
                  <li>
                    <div>
                      Bug in centroid(), non-deterministic result if calculated for
                      e.g. a Polygon with zero-area.
                    </div>
                  </li>
                  <li>
                    <div>
                      Bug in buffers for joins with a limited number of points
                    </div>
                  </li>
                  <li>
                    <div>
                      Bug in buffers for round joins with limited number of points
                      around sharp corners
                    </div>
                  </li>
                  <li>
                    <div>
                      Bug in buffers for joins with large buffer distances
                    </div>
                  </li>
                  <li>
                    <div>
                      Bug in buffers for round ends with an odd number of points
                    </div>
                  </li>
                  <li>
                    <div>
                      Bug in buffers for flat ends with large buffer distances
                    </div>
                  </li>
                  <li>
                    <div>
                      Bug in buffers for interior rings with large negative buffer
                      distances
                    </div>
                  </li>
                  <li>
                    <div>
                      Bug in closing_iterator not working properly when the input
                      range is empty
                    </div>
                  </li>
                  <li>
                    <div>
                      Bug in is_simple, not handling properly closed simple linestrings
                      within multilinestrings
                    </div>
                  </li>
                  <li>
                    <div>
                      Bug in rtree constructors taking a pair of Iterators or a Range
                      (packing algorithm), the use of reference to destroyed temporary
                      when Iterator's reference is not true reference, e.g. for some
                      of the Range Adaptors. It also affects distance() and comparable_distance().
                      This bug may cause unexpected behavior of the rtree or distance()
                      algorithm, e.g. an assertion failure or a SEGFAULT.
                    </div>
                  </li>
                  <li>
                    <div>
                      Bug in rtree count() member function, the use of reference
                      to destroyed temporary when object of type convertible but
                      not the same as value_type or indexable_type is passed. If
                      this happens, wrong result may be returned, in most cases 0.
                    </div>
                  </li>
                  <li>
                    <div>
                      Bugs related to the handling of Ranges, preventing compilation
                      of Geometries using non-Container Ranges in some algorithms
                      (thanks to Samuel Debionne)
                    </div>
                  </li>
                </ul>
              </div>
            </li>
          </ul>
        </div>
      </li>
      <li>
        <div>
          <span class="library"><a href="/libs/functional/hash/">Hash</a>:</span>
          <ul>
            <li>
              <div>
                Fixed strict aliasing violation (<a href="https://github.com/boostorg/functional/pull/3">GitHub
                #3</a>).
              </div>
            </li>
          </ul>
        </div>
      </li>
      <li>
        <div>
          <span class="library"><a href="/libs/interprocess/">Interprocess</a>:</span>
          <ul>
            <li>
              <div>
                Reduced some compile-time dependencies. Updated to Boost.Container
                changes.
              </div>
            </li>
            <li>
              <div>
                Fixed bugs:
                <ul>
                  <li>
                    <div>
                      <a href="https://github.com/boostorg/interprocess/pull/13">GitHub
                      Pull #13 (<em>"haiku: we don't have XSI shared memory,
                      so don't try to use it"</em>)</a>.
                    </div>
                  </li>
                </ul>
              </div>
            </li>
          </ul>
        </div>
      </li>
      <li>
        <div>
          <span class="library"><a href="/libs/intrusive/">Intrusive</a>:</span>
          <ul>
            <li>
              <div>
                Reduced compile-time dependencies, headers, and the use of Boost.Preprocessor,
                specially for hooks and iterators.
              </div>
            </li>
            <li>
              <div>
                Fixed bugs:
                <ul>
                  <li>
                    <div>
                      <a href="https://svn.boost.org/trac/boost/ticket/6720">Boost
                      Trac #6720: <em>intrusive::unordered_set::clear_and_dispose
                      does not compile on VC11 Beta when passed a stateless lambda</em></a>
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="https://svn.boost.org/trac/boost/ticket/10771">Boost
                      Trac #10771: <em>remove_if is broken for slist</em></a>
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="https://svn.boost.org/trac/boost/ticket/10853">Boost
                      Trac #10853: <em>problem with detection of const_cast_from</em></a>
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="https://svn.boost.org/trac/boost/ticket/10987">Boost
                      Trac #10987: <em>bug in any_xxx_node_traits, returning
                      by reference</em></a>
                    </div>
                  </li>
                </ul>
              </div>
            </li>
          </ul>
        </div>
      </li>
      <li>
        <div>
          <span class="library"><a href="/libs/lexical_cast/">Lexical Cast</a>:</span>
          <ul>
            <li>
              <div>
                Now std::stream is used for conversions to float numbers <a href="https://svn.boost.org/trac/boost/ticket/5660">#5660</a>,
                <a href="https://svn.boost.org/trac/boost/ticket/6975">#6975</a>, <a href="https://svn.boost.org/trac/boost/ticket/10639">#10639</a>
              </div>
            </li>
          </ul>
        </div>
      </li>
      <li>
        <div>
          <span class="library"><a href="/libs/log/">Log</a>:</span>
          <ul>
            <li>
              <div>
                Bug fixes:
                <ul>
                  <li>
                    <div>
                      Fixed thread id formatting.
                    </div>
                  </li>
                  <li>
                    <div>
                      Fixed process id formatting. (<a href="https://svn.boost.org/trac/boost/ticket/10926">#10926</a>)
                    </div>
                  </li>
                  <li>
                    <div>
                      Fixed build failure on GNU Hurd.
                    </div>
                  </li>
                  <li>
                    <div>
                      Fixed incorrect behavior of text file sink backend in case
                      if free space on the file system gets exhausted. The sink will
                      no longer create lots of empty files in attempt to recover.
                      (<a href="https://svn.boost.org/trac/boost/ticket/11016">#11016</a>)
                    </div>
                  </li>
                  <li>
                    <div>
                      Fixed incorrect behavior of <code><span class="identifier">attribute_set</span><span class="special">::</span><span class="identifier">insert</span><span class="special">()</span></code> in some cases. The inserted
                      elements could have made some previously inserted elements
                      not findable. (<a href="https://svn.boost.org/trac/boost/ticket/11106">#11106</a>)
                    </div>
                  </li>
                  <li>
                    <div>
                      Fixed incorrect behavior of <code><span class="identifier">attribute_value_set</span><span class="special">::</span><span class="identifier">size</span><span class="special">()</span></code> if a large number of attribute
                      values are inserted into the set. (<a href="https://svn.boost.org/trac/boost/ticket/11148">#11148</a>)
                    </div>
                  </li>
                </ul>
              </div>
            </li>
            <li>
              <div>
                See <a href="/libs/log/doc/html/log/changelog.html">changelog</a>
                for more details.
              </div>
            </li>
          </ul>
        </div>
      </li>
      <li>
        <div>
          <span class="library"><a href="/libs/math/">Math</a>:</span>
          <ul>
            <li>
              <div>
                Added two new special functions - trigamma and polygamma.
              </div>
            </li>
            <li>
              <div>
                Large update to the Elliptic integral code to use Carlson's latest
                algorithms - these should be more stable, more accurate and slightly
                faster than before. Also added support for Carlson's RG integral.
              </div>
            </li>
            <li>
              <div>
                Added ellint_d, jacobi_zeta and heuman_lambda elliptic integrals.
              </div>
            </li>
            <li>
              <div>
                Fixed namespace scope constants so they are constexpr on conforming
                compilers, see <a href="https://svn.boost.org/trac/boost/ticket/10901">#10901</a>.
              </div>
            </li>
            <li>
              <div>
                Fixed various cases of spurious under/overflow in the incomplete
                beta and gamma functions, plus the elliptic integrals, with thanks
                to Rocco Romeo.
              </div>
            </li>
            <li>
              <div>
                Fix 3-arg legendre_p and legendre_q functions to not call the policy
                based overload if the final argument is not actually a policy.
              </div>
            </li>
            <li>
              <div>
                Cleaned up some dead code in the incomplete beta function, see <a href="https://svn.boost.org/trac/boost/ticket/10985">#10985</a>.
              </div>
            </li>
            <li>
              <div>
                Fixed extreme-value pdf for large valued inputs, see <a href="https://svn.boost.org/trac/boost/ticket/10938">#10938</a>.
              </div>
            </li>
            <li>
              <div>
                Switched documentation to use SVG rather than PNG graphs and equations
                - browsers seem to have finally caught up!
              </div>
            </li>
          </ul>
        </div>
      </li>
      <li>
        <div>
          <span class="library"><a href="/libs/move/">Move</a>:</span>
          <ul>
            <li>
              <div>
                Added <code><span class="identifier">BOOST_MOVE_BASE</span></code>
                utility.
              </div>
            </li>
            <li>
              <div>
                Added <code><span class="identifier">adl_move_swap</span></code>
                utility.
              </div>
            </li>
            <li>
              <div>
                Reduced dependencies on other Boost libraries to make the library
                a bit more lightweight.
              </div>
            </li>
            <li>
              <div>
                Fixed bugs:
                <ul>
                  <li>
                    <div>
                      <a href="https://svn.boost.org/trac/boost/ticket/11044">Trac
                      #11044: <em>"boost::rv inherits off union, when
                      such passed as template argument"</em></a>.
                    </div>
                  </li>
                </ul>
              </div>
            </li>
          </ul>
        </div>
      </li>
      <li>
        <div>
          <span class="library"><a href="/libs/multi_index/index.html">Multi-index Containers</a>:</span>
          <ul>
            <li>
              <div>
                The efficiency of lookup operations has improved in situations where
                they involve the generation of temporary values of <code><span class="identifier">key_type</span></code>. Consider for instance
                the following code:
              </div>
<pre><span class="keyword">typedef</span> <span class="identifier">multi_index_container</span><span class="special">&lt;</span>
  <span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span><span class="special">,</span>
  <span class="identifier">indexed_by</span><span class="special">&lt;</span>
    <span class="identifier">ordered_unique</span><span class="special">&lt;</span><span class="identifier">identity</span><span class="special">&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span><span class="special">&gt;</span> <span class="special">&gt;</span>
  <span class="special">&gt;</span>
<span class="special">&gt;</span> <span class="identifier">multi_t</span><span class="special">;</span>
<span class="special">...</span>
<span class="identifier">multi_t</span> <span class="identifier">m</span><span class="special">=...;</span>
<span class="identifier">m</span><span class="special">.</span><span class="identifier">find</span><span class="special">(</span><span class="string">"boost"</span><span class="special">);</span> <span class="comment">// passed a const char*, not a std::string    </span>
</pre>
              <div>
                In previous versions of the library, the <code><span class="identifier">find</span></code>
                operation generates several temporary <code><span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span></code>s
                (one every time an internal comparison is made). In sufficiently
                advanced compilers, this is now avoided so that only one temporary
                is created.
              </div>
            </li>
            <li>
              <div>
                Maintenance fixes.
              </div>
            </li>
          </ul>
        </div>
      </li>
      <li>
        <div>
          <span class="library"><a href="/libs/multiprecision/">Multiprecision</a>:</span>
          <ul>
            <li>
              <div>
                Changed <code><span class="identifier">frexp</span></code> to
                always be non-expression template generating, see: <a href="https://svn.boost.org/trac/boost/ticket/10993">10993</a>.
              </div>
            </li>
            <li>
              <div>
                Improved support of cpp_dec_float on Cygwin and other platforms with
                missing long double support, see <a href="https://svn.boost.org/trac/boost/ticket/10924">10924</a>.
              </div>
            </li>
            <li>
              <div>
                Improved noexcept support and added some more tests, see <a href="https://svn.boost.org/trac/boost/ticket/10990">10990</a>.
              </div>
            </li>
            <li>
              <div>
                Various workarounds applied for Intel-15.0 and Solaris-12.4 compilers.
              </div>
            </li>
          </ul>
        </div>
      </li>
      <li>
        <div>
          <span class="library"><a href="/libs/optional/">Optional</a>:</span>
          <ul>
            <li>
              <div>
                Improved documentation; documented IO operations and header files.
              </div>
            </li>
            <li>
              <div>
                <em>Fixed Bugs:</em>
                <ul>
                  <li>
                    <div>
                      <code><span class="identifier">boost</span><span class="special">::</span><span class="identifier">none_t</span></code> is no longer convertible
                      from literal 0. This avoids a bug where <code><span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">rational</span><span class="special">&lt;</span><span class="keyword">int</span><span class="special">&gt;&gt;</span> <span class="identifier">oi</span>
                      <span class="special">=</span> <span class="number">0</span><span class="special">;</span></code> would initialize an optional
                      object with no contained value.
                    </div>
                  </li>
                  <li>
                    <div>
                      Added a way to manually disable move semantics: just define
                      macro <code><span class="identifier">BOOST_OPTIONAL_CONFIG_NO_RVALUE_REFERENCES</span></code>.
                      This can be used to work around <a href="http://svn.boost.org/trac/boost/ticket/10399">#10399</a>.
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="http://svn.boost.org/trac/boost/ticket/10825">#10825</a>
                      Improved the trick that prevents streaming out <code><span class="identifier">optional</span></code> without header
                      <code><span class="identifier">optional_io</span><span class="special">.</span><span class="identifier">hpp</span></code>
                      by using safe-bool idiom.
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="http://svn.boost.org/trac/boost/ticket/11087">#11087</a>
                      It is no longer possible to assign <code><span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">U</span><span class="special">&gt;</span></code> to <code><span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&gt;</span></code> when <code><span class="identifier">U</span></code>
                      is not assignable or convertible to <code><span class="identifier">T</span></code>.
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="http://svn.boost.org/trac/boost/ticket/10839">#10839</a>
                      Value accessors now work correctly on rvalues of <code><span class="identifier">optional</span><span class="special">&lt;</span><span class="identifier">T</span><span class="special">&amp;&gt;</span></code>.
                    </div>
                  </li>
                </ul>
              </div>
            </li>
          </ul>
        </div>
      </li>
      <li>
        <div>
          <span class="library"><a href="/libs/phoenix/">Phoenix</a>:</span>
          <ul>
            <li>
              <div>
                Version 3.2.0
              </div>
            </li>
            <li>
              <div>
                <em>New Features:</em>
                <ul>
                  <li>
                    <div>
                      Phoenix now has a <em>lazy list</em> implementation
                      as an optional extension.
                    </div>
                  </li>
                </ul>
              </div>
            </li>
            <li>
              <div>
                <em>New Example:</em>
                <ul>
                  <li>
                    <div>
                      A new example <em>bind_goose</em> shows the compatibility
                      between <em>boost bind</em> and <em>boost
                      phoenix bind</em>.
                    </div>
                  </li>
                </ul>
              </div>
            </li>
            <li>
              <div>
                <em>Fixed Bugs:</em>
                <ul>
                  <li>
                    <div>
                      <a href="http://svn.boost.org/trac/boost/ticket/10927">#10927</a>
                      Missing <code><span class="identifier">std</span><span class="special">::</span></code> qualifier for <code><span class="identifier">fabs</span></code> in <code><span class="identifier">phoenix</span><span class="special">/</span><span class="identifier">test</span><span class="special">/</span><span class="identifier">stdlib</span><span class="special">/</span><span class="identifier">cmath</span><span class="special">.</span><span class="identifier">cpp</span></code>
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="http://svn.boost.org/trac/boost/ticket/11085">#11085</a>
                      Missing qualifier for pow call in <code><span class="identifier">phoenix</span><span class="special">/</span><span class="identifier">test</span><span class="special">/</span><span class="identifier">function</span><span class="special">/</span><span class="identifier">function_tests</span><span class="special">.</span><span class="identifier">cpp</span></code>
                    </div>
                  </li>
                  <li>
                    <div>
                      Fixes for a number of cases failing with <em>bind</em>,
                      <em>lambda</em> and <em>let</em>.
                    </div>
                  </li>
                </ul>
              </div>
            </li>
          </ul>
        </div>
      </li>
      <li>
        <div>
          <span class="library"><a href="/libs/predef/">Predef</a>:</span>
          <ul>
            <li>
              <div>
                Version 1.2
              </div>
            </li>
            <li>
              <div>
                Added Visual Studio 2015 detection.
              </div>
            </li>
            <li>
              <div>
                Added detection of Haiku OS.
              </div>
            </li>
            <li>
              <div>
                Fix Android endian detection.
              </div>
            </li>
            <li>
              <div>
                Added <code><span class="identifier">predef_check</span></code>
                program and BBv2 integration for build configuration checks.
              </div>
            </li>
          </ul>
        </div>
      </li>
      <li>
        <div>
          <span class="library"><a href="/libs/random/">Random</a>:</span>
          <ul>
            <li>
              <div>
                Added non_central_chi_squared_distribution.
              </div>
            </li>
          </ul>
        </div>
      </li>
      <li>
        <div>
          <span class="library"><a href="/libs/thread/">Thread</a>:</span>
          <ul>
            <li>
              <div>
                <em>Version</em> 4.5.0
              </div>
            </li>
            <li>
              <div>
                <em>New Experimental Features:</em>
                <ul>
                  <li>
                    <div>
                      <a href="http://svn.boost.org/trac/boost/ticket/9600">#9600</a>
                      Async: Add task_region
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="http://svn.boost.org/trac/boost/ticket/10611">#10611</a>
                      Add emplace promise::set_value and emplace make_ready_future
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="http://svn.boost.org/trac/boost/ticket/10826">#10826</a>
                      Add scheduled executor operations
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="http://svn.boost.org/trac/boost/ticket/11048">#11048</a>
                      Add a serial_executor based on continuations
                    </div>
                  </li>
                </ul>
              </div>
            </li>
            <li>
              <div>
                <em>Fixed Bugs:</em>
                <ul>
                  <li>
                    <div>
                      <a href="http://svn.boost.org/trac/boost/ticket/6787">#6787</a>
                      boost::thread::sleep() hangs if system time is rolled back
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="http://svn.boost.org/trac/boost/ticket/10734">#10734</a>
                      Submit method work differently on different executors, some
                      throw exception and some silently ignore error (thread_executor
                      and inline_executor)
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="http://svn.boost.org/trac/boost/ticket/10736">#10736</a>
                      Task exceptions silently ignored. I think std::terminate solution
                      from N3785 and std::thread is better choice and more consistent.
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="http://svn.boost.org/trac/boost/ticket/10737">#10737</a>
                      In serial_executor we have infinite wait if task throw exception.
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="http://svn.boost.org/trac/boost/ticket/10822">#10822</a>
                      Boost.Thread fails to compile on Android
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="http://svn.boost.org/trac/boost/ticket/10824">#10824</a>
                      Boost.Thread 1.57 breaks Windows XP compatibility for SP2 and
                      below.
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="http://svn.boost.org/trac/boost/ticket/10963">#10963</a>
                      future&lt;future&lt;T&gt;&gt;::then Has No Implementation
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="http://svn.boost.org/trac/boost/ticket/10964">#10964</a>
                      future&lt;future&lt;T&gt;&gt;::unwrap().then() Deadlocks
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="http://svn.boost.org/trac/boost/ticket/10968">#10968</a>
                      The futures returned by async() and future::then() are not
                      blocking.
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="http://svn.boost.org/trac/boost/ticket/10971">#10971</a>
                      shared_future::get()/get_or() must be const
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="http://svn.boost.org/trac/boost/ticket/10972">#10972</a>
                      shared_future::then() can be called multiple times.
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="http://svn.boost.org/trac/boost/ticket/10979">#10979</a>
                      Support T&amp; type deduction when the make_ready_future parameter
                      is reference_wrapper&lt;T&gt;
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="http://svn.boost.org/trac/boost/ticket/10996">#10996</a>
                      Thread physical_concurrency() is failing on Windows
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="http://svn.boost.org/trac/boost/ticket/11035">#11035</a>
                      BOOST_HAS_PTHREAD_MUTEXATTR_SETTYPE not defined for Android
                    </div>
                  </li>
                  <li>
                    <div>
                      <a href="http://svn.boost.org/trac/boost/ticket/11053">#11053</a>
                      The attached code results in a R6025 - pure virtual function
                      call in run_thread_exit_callbacks
                    </div>
                  </li>
                </ul>
              </div>
            </li>
          </ul>
        </div>
      </li>
      <li>
        <div>
          <span class="library"><a href="/libs/type_erasure/">TypeErasure</a>:</span>
          <ul>
            <li>
              <div>
                Fixed compilation with MSVC 12.
              </div>
            </li>
          </ul>
        </div>
      </li>
      <li>
        <div>
          <span class="library"><a href="/libs/type_index/">TypeIndex</a>:</span>
          <ul>
            <li>
              <div>
                Link time assertions added on platforms that support it
              </div>
            </li>
          </ul>
        </div>
      </li>
      <li>
        <div>
          <span class="library"><a href="/libs/units">Units</a>:</span>
          <ul>
            <li>
              <div>
                Fix for base units with arbitrary dimensions.
              </div>
            </li>
          </ul>
        </div>
      </li>
      <li>
        <div>
          <span class="library"><a href="/libs/unordered">Unordered</a>:</span>
          <ul>
            <li>
              <div>
                Fix move assignment with stateful, propagate_on_container_move_assign
                allocators (<a href="https://svn.boost.org/trac/boost/ticket/10777">#10777</a>).
              </div>
            </li>
            <li>
              <div>
                Fix potential overflow when calculating number of buckets to allocate
                (<a href="https://github.com/boostorg/unordered/pull/4">GitHub
                #4</a>).
              </div>
            </li>
            <li>
              <div>
                Other minor changes, see <a href="/doc/html/unordered/changes.html">changelog</a>.
              </div>
            </li>
          </ul>
        </div>
      </li>
      <li>
        <div>
          <span class="library"><a href="/libs/variant/">Variant</a>:</span>
          <ul>
            <li>
              <div>
                <strong>Breaking change:</strong> Compile time checked
                getter is now used by default in <code><span class="identifier">boost</span><span class="special">::</span><span class="identifier">get</span><span class="special">&lt;</span><span class="identifier">U</span><span class="special">&gt;(</span><span class="identifier">VariantT</span><span class="special">)</span></code> and <code><span class="identifier">boost</span><span class="special">::</span><span class="identifier">polymorphic_get</span><span class="special">&lt;</span><span class="identifier">U</span><span class="special">&gt;(</span><span class="identifier">VariantT</span><span class="special">)</span></code>. New getter asserts that type <code><span class="identifier">U</span></code> is one of the types that can
                be stored in <code><span class="identifier">VariantT</span></code>.
                Define <code><span class="identifier">BOOST_VARIANT_USE_RELAXED_GET_BY_DEFAULT</span></code>
                to change default behavior. See <a href="/doc/html/variant/reference.html#header.boost.variant.get_hpp">get.hpp</a>
                and <a href="/doc/html/variant/reference.html#header.boost.variant.polymorphic_get_hpp">polymorphic_get.hpp</a>
                descriptions for more info <a href="https://svn.boost.org/trac/boost/ticket/547">#547</a>.
              </div>
            </li>
            <li>
              <div>
                Added missing comparison operators to variant <a href="https://svn.boost.org/trac/boost/ticket/8620">#8620</a>, <a href="https://svn.boost.org/trac/boost/ticket/10811">#10811</a>
              </div>
            </li>
            <li>
              <div>
                Multiple documentations fixes <a href="https://svn.boost.org/trac/boost/ticket/10273">#10273</a>, <a href="https://svn.boost.org/trac/boost/ticket/10653">#10653</a>
              </div>
            </li>
            <li>
              <div>
                Variadic templats enabled on Clang <a href="https://svn.boost.org/trac/boost/ticket/10832">#10832</a>
              </div>
            </li>
            <li>
              <div>
                Autodetection of return types for visitors in C++14, which makes
                it possible to use <code><span class="identifier">boost</span><span class="special">::</span><span class="identifier">apply_visitor</span></code>
                with generic lambdas <a href="https://svn.boost.org/trac/boost/ticket/10837">#10837</a>:
              </div>
<pre><span class="keyword">auto</span> <span class="identifier">str</span> <span class="special">=</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">apply_visitor</span><span class="special">(</span>
    <span class="special">[](</span><span class="keyword">auto</span> <span class="identifier">v</span><span class="special">)</span> <span class="special">{</span>
        <span class="keyword">return</span> <span class="identifier">boost</span><span class="special">::</span><span class="identifier">lexical_cast</span><span class="special">&lt;</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">string</span><span class="special">&gt;(</span><span class="identifier">v</span><span class="special">);</span>
    <span class="special">},</span>
    <span class="identifier">variant_instance</span>
<span class="special">);</span>
</pre>
            </li>
            <li>
              <div>
                Improved swap functions <a href="https://svn.boost.org/trac/boost/ticket/10882">#10882</a>
              </div>
            </li>
            <li>
              <div>
                Many improvements to variadic templates, even more methods support
                variadics.
              </div>
            </li>
            <li>
              <div>
                Multiple bugfixes and testing improvements including Coveralls integration
              </div>
            </li>
          </ul>
        </div>
      </li>
    </ul>
  </div>
  <div id="version_1_58_0.compilers_tested">
    <h3><span class="link">Compilers Tested</span></h3>
    <p>
      Boost's primary test compilers are:
    </p>
    <ul>
      <li>
        <div>
          Linux:
          <ul>
            <li>
              <div>
                Clang: 3.4
              </div>
            </li>
            <li>
              <div>
                Clang, C++14: 3.5, 3.6
              </div>
            </li>
            <li>
              <div>
                GCC: 4.4.7, 4.9.2
              </div>
            </li>
            <li>
              <div>
                GCC, C++98: 4.8.1, 4.8.2
              </div>
            </li>
            <li>
              <div>
                GCC, C++11: 4.4.7, 4.8.4, 4.9.2
              </div>
            </li>
            <li>
              <div>
                GCC, C++14: 4.9.2
              </div>
            </li>
          </ul>
        </div>
      </li>
      <li>
        <div>
          Windows:
          <ul>
            <li>
              <div>
                GCC, mingw: 4.4.7, 4.5.4, 4.6.3, 4.7.3, 4.8.2
              </div>
            </li>
            <li>
              <div>
                Visual C++: 8.0, 9.0, 10.0, 11.0, 12.0
              </div>
            </li>
          </ul>
        </div>
      </li>
      <li>
        <div>
          FreeBSD:
          <ul>
            <li>
              <div>
                GCC: 4.2.1
              </div>
            </li>
          </ul>
        </div>
      </li>
      <li>
        <div>
          QNX:
          <ul>
            <li>
              <div>
                QCC: 4.4.2
              </div>
            </li>
          </ul>
        </div>
      </li>
    </ul>
    <p>
      Boost's additional test compilers include:
    </p>
    <ul>
      <li>
        <div>
          Linux:
          <ul>
            <li>
              <div>
                Clang: 3.0, 3.1, 3.2, 3.3, 3.4
              </div>
            </li>
            <li>
              <div>
                Clang, C++14: 3.5, 3.6
              </div>
            </li>
            <li>
              <div>
                GCC: 4.4.7, 4.6.4, 4.7.3, 4.8.1, 4.9.2, 5.0.0 (experimental)
              </div>
            </li>
            <li>
              <div>
                GCC, C++11: 4.4.7, 4.8.4, 4.9.2
              </div>
            </li>
            <li>
              <div>
                GCC, C++14: 4.9.2
              </div>
            </li>
          </ul>
        </div>
      </li>
      <li>
        <div>
          Windows:
          <ul>
            <li>
              <div>
                GCC, mingw: 4.4.7, 4.5.4, 4.6.4, 4.7.3
              </div>
            </li>
            <li>
              <div>
                Visual C++: 8.0, 9.0, 10.0, 11.0, 12.0, 14.0
              </div>
            </li>
          </ul>
        </div>
      </li>
      <li>
        <div>
          Android
          <ul>
            <li>
              <div>
                Clang: 3.4, 3.5
              </div>
            </li>
            <li>
              <div>
                GCC: 4.8, 4.9
              </div>
            </li>
          </ul>
        </div>
      </li>
      <li>
        <div>
          FreeBSD:
          <ul>
            <li>
              <div>
                GCC: 4.2.1
              </div>
            </li>
          </ul>
        </div>
      </li>
      <li>
        <div>
          QNX:
          <ul>
            <li>
              <div>
                QCC: 4.4.2
              </div>
            </li>
          </ul>
        </div>
      </li>
    </ul>
  </div>
  <div id="version_1_58_0.acknowledgements">
    <h3><span class="link">Acknowledgements</span></h3>
    <p>
      <a href="/users/people/beman_dawes.html">Beman Dawes</a>, Eric Niebler,
      <a href="/users/people/rene_rivera.html">Rene Rivera</a>, Daniel James,
      Vladimir Prus and Marshall Clow managed this release.
    </p>
  </div>
</div>
              </div>
            </div>
          </div>
        </div>
      </div>

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